Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 175
Figure 25 shows a typical SCADA PCM multidrop bridge network.
Figure 25 SCADA PCM Multidrop Bridge Network
The PCM multidrop bridge application uses Mu-Law and A-Law encoding; therefore,
the modularity is different from MDDB modularity. Table 22 shows the modularity for
a PCM multidrop bridge on the Integrated Services card.
Table 22 PCM Multidrop Bridge Modularity
Encoding Scheme Number of
Bridges per
Integrated
Services Card
Number of
Branches per
Bridge
Total Number
of Branches
per Integrated
Services Card
Mu-Law (North America) 16 22 352
A-Law (rest of world) 16 30 480
SCADA IED 1
Remote 1
SCADA IED 2
Remote 2
SCADA IED 255
Remote n
SCADA
SERVER 1
Control Center A
SCADA
SERVER 2
Control Center B
7705 SAR
7705 SAR 7705 SAR7705 SAR
MPLS
Network
25433
E&M
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